CHECK WINTER TIRE PRESSURE
For winter tires, a rise in pressure of 0.2 bar is recommended due to thermal fluctuation that leads to a decrease in tire pressure. It is preferable to measure pressure in cold conditions at least 30 minutes after using the vehicle, in order to be sure that the heat produced while driving has not modified the pressure. The winter tires check has to be performed not only after traumas (such as bumping the tires), but at least once a month.
By law, it is permitted to continue driving, also on winter tires, until the tread depth goes down to 2/32''
When not in use, winter tire must be preserved, preferably inflated, with rims put on and pressure under control periodically. The best way to save them is positioning in a single line on shelves vertically, at least 4 inches from the ground, with the lateral side in a vertical way in order to not affect the profile.